- UE Radio transmission and reception (TDD)

5.3.1 TDD HSDPA

5.3.1.1 Fixed Reference Channel

Frederic Charpentier (Siemens) pointed out that the IR combining is not considered in the simulation. If it is not included, this UE technique will not be tested. The chairman suggest to provide different simulations comparing Chase and IR combining to see if there is any difference in terms of performance. Joseph Levy (Interdigital) noted that preliminary analysis so far didn't show a substantial difference.

Decision: The assumptions are agreed
R4-021540 HSDPA simulation results for 3,84 Mcps TDD, Fixed Reference Channel (InterDigital)

R4-021541 Addition of HSDPA UE requirements for 3,84 Mcps TDD option for 16QAM and QPSK for fixed reference channels (CR 127 to 25.102 Rel-5) (InterDigital)

Frederic Charpentier (Siemens) presented some objections to the simulation results in R4-021540. Decision: The CR is revised

These simulation results and attached CR cover the concerns raised by Siemens

Decision: The CR is agreed
R4-021402 Simulation results for QPSK and 16QAM for 1,28 Mcps TDD option (Motorola)

These results are not included in R4-021601/R4-021602, which summarize the results from different companies (Samsung, Siemens, Panasonic). The results from Motorola are however in line with previous papers. Samsung will produce a revision of the comparison paper (R4-021601) and the CR (R4-021602) taking into account the results from Motorola.

Decision :The simulations are noted

These documents are the revisions of R4-021601 and R4-021602.

Decision: The CR is agreed.

5.3.1.2 Variable channel

These assumptions are intended for 1.28 Mcps. Joseph Levy objected the assumption that the NodeB simulator should transmit with the last transport block size and the modulation scheme when it receives CQI=0. Frederic clarified that the situation is different for HCR and LCR, in any case Panasonic, Samsung and Siemens had reviewed off line the assumptions and agreed on the current paper.

Decision: R4-021563 is approved
R4-021542 HSDPA simulation assumptions for 3,84 Mcps TDD option with variable reference channels (InterDigital)

Frederic Charpentier (Siemens) objected that some these assumptions are implementation dependant. He commented that the CQI table is different for LCR and HCR, Joseph objected that this is not a problem since they are different systems.

Decision: The document is noted
R4-021667 HSDPA simulation assumptions for 3,84 Mcps TDD option with variable reference channels (InterDigital)

This document contains the assumptions agreed by Interdigital and Siemens.

Decision: The document is approved
R4-021543 Simulation Results for 3.84 Mcps TDD HSDPA with Variable Reference Channel (InterDigital)

R4-021544 Addition of HSDPA UE requirements for 3,84 Mcps TDD option for 16QAM and QPSK for variable reference channels (CR 128 to 25.102 Rel-5) (InterDigital)

There were some objections about the simulation assumptions in R4-021542, these two documents cannot be approved.

Decision: The documents are not approved
R4-021668 Simulation Results for 3.84 Mcps TDD HSDPA with Variable Reference Channel (InterDigital)

No comments

Decision: The results are noted
R4-021669 Addition of HSDPA UE requirements for 3,84 Mcps TDD option for 16QAM and QPSK for variable reference channels (CR 128r1 to 25.102 Rel-5) (InterDigital)

No comments

Decision: The CR is agreed

5.4 25.104 - BTS Radio transmission and reception (FDD)

Ericsson clarified that no new co-existence simulation were done to derive these values, but existing co-existence and MCL values. Eric questioned the need for a new requirement in the UMTS spec since there is no rationale supporting it in the GSM specification.

Han van Bussel (T-Mobile) suggested to introduce this requirement in Rel99, if there is a real need for it, it doesn't make sense to delay to Rel4 since the networks are being deployed already based on Rel99 specifications. This was agreed, the CR cover will therefore be revised.

Decision: The CR is revised

It is agreed to send a small LS to GERAN informing of the work done in the area (R4-021720).

Decision: The CRs are agreed
R4-021449 FDD GSM 850 / PCS 1900 co-existence in the Same Geographic Area (CR 150 to 25.104 Rel-5) (Ericsson)

Decision: The CR is agreed

Decision: The CRs are agreed

Decision: The CR is agreed

Eric Georgeaux (Nortel) clarified that there are only two antenna signals defined in WG1 specifications. If there are more antenna ports, it means that several ports are connected to the same antenna output and share the same signal.

The proposal is approved, it is agreed to introduce the correction in Rel-4 and Rel-5.

Decision: The document is agreed.

No comments.

Decision: The CR is agreed
R4-021505 Clarification of the W-CDMA interferer definition in BS requirements for ACS and blocking characteristics (CR 157 to 25.104 Rel-4) (Siemens)

Cliff Bailey (Spirent) required some time to examine it detail the implications of the change, it seems to affect the PAR ratio of the interfering signal. A revision was agreed off line.

Decision: The CR is revised
R4-021736 Clarification of the WCDMA interferer (Spirent)

This document is a proposal to agree upon before drafting the CRs. Cliff Baley (Spirent) suggested companies to study the paper and submit comments, the CRs will be made available on Monday 19^th and discussion will take place until the Friday.

CRs are in documents R4-021744 to R4-021747

Decision: The document is noted

Decision: Email approval. See section 14.

5.4.1 BS IPDL attenuation requirement

R4-021546 IPDL attenuation simulation results (Siemens)

Michael Jeck (Ericsson) asked whether UE performance had been taken into account, since previous simulations showed that variations in the UE measurement capability have a big impact in the positioning accuracy. Frederic Charpentier (Siemens) clarified that only one value is used, CPICH_Ec/Io = -20 dB. Nokia commented that from the UE point of view there are some limitations in real radio environments on what we can do and on what we already are on the limit. Hence, the performance of the UE can’t always be improved but BS attenuation yes. If we can’t accept that, we should accept coverage limitations.

R4-021613 BS IPDL requirement (Nortel Networks)

Tuomo Säynäjäkangas (Nokia) objected that the area of the cell for which the IPDL requirement should be set is precisely in the vicinity of the BS. Eric Georgeaux (Nortel) noted that it has been traditionally assumed in WG4, for ACLR and UE ACS for example, that the UE is not close to the BS.

It seems that no agreement can be reached. So far, companies have expressed the following preferences:

Nokia	- 45 dB
Ericsson	- 25 dB
Nortel	- 25 dB
Siemens	- 40 dB

Given the bottleneck situation, after a year of discussion on this topic the interested companies haven't been able to reach consensus, the chairman decided to go for a vote. Nokia commented that they were happy with the Siemens compromise proposal of –40 dB. The question to be answered would be which of two values, -25 dB or -40 dB, should be used for the IPDL. Document R4-021640 contains the vote proposal by the chairman

R4-021640 IPDL vote document (Chairman)

After off line discussions the interested parties agreed a common proposal so the vote is finally cancelled. The following CRs are the results of this agreement, which proposes a value of -35 dB

Decision: The vote is cancelled
R4-021687 BS IPDL requirement (CR 159r1 to 25.104 Rel-4) (Siemens)

R4-021688 BS IPDL requirement (CR 160r1 to 25.104 Rel-5) (Siemens)

Decision: The CRs are agreed

Directory: tsg ran
tsg ran -> Scm-061 -confCall6-Summary Source: 3gpp – 3gpp2 scm ahg co-Chair Date
tsg ran -> Title: Spatial Channel Model Text Description File: Source

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